var menuInit = function () {
if(document.getElementById('leftMenu')) {menu = document.getElementById('leftMenu')};
var items = menu.getElementsByTagName('li');
for (i=0;i<items.length;i++) {
  if(items[i].className == 'active') {
    items[i].nextSibling.className = 'actNext';
  }
}
}
window.onload = menuInit;